Your dog would ever bite u??

My friend's dog was five and half years old, Few days past, he was serving food to his dog, suddenly it has bitten him.*Until these days it doesnít have this kind of behavior. He was too worried. I donít know what's the reason can someone suggest anything?

Re: Your dog would ever bite u??

That's strange, Paw Campus. The dog goes five and a half years without biting his human, then suddenly decides to...
I presume the dog has lived with that person all or most of that five and a half years?
If the dog has only recently been adopted then their relationship is a work in progress, and things like that can happen. Particularly if the dog has been in shelter, stressed, or has come from a background where he/she had to fight for food.
But it's serious, and needs work right away. It musn't be allowed to continue. A good canine behaviourist would no doubt be able to help and advise. (not a dog trainer -instead a behaviourist.)

But if he dog has lived with the same person all that time, and suddenly bites like that, it's odd and concerning. I'd still say help from a canine behaviourist is a good idea. It's urgent too.

But sudden behaviour changes can sometimes be caused by some hidden illness. It's wise to get the dog checked out physically as well, and a blood test run.